Talk:Tone mapping

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[edit] Too many images?

There are an awful lot of images on this page, most of which add very little to the topic of tone mapping - they're just HDR photos with no information on the tone mapping algorithm used. The Grand Canyon image is the only one worth keeping from the Gallery IMHO, because it shows an example of direct (i.e. non gradient-based) tone mapping, which can be compared with the gradient-based tone mapping examples given in the sidebar pictures of the church and the beach, but I think the others should probably be deleted. I'll wait a couple of weeks before making the changes. Any comments? Chrisjohnson 13:07, 2 April 2007 (UTC)

Just a note, for Image:Victoria Inner Harbour HDR.png and Image:Victoria harbor yin-yan.jpg the original source images are available on the image page. I find one a good example of an unrealistic tone mapping result, and the other a realistic tone mapping result. Of course, these are my pictures so I may be biased. ^High_InBC^{(Need help? Ask me)} 13:40, 2 April 2007 (UTC)

Keeping examples of this sort does make sense if they're captioned as such. Keeping an example of an image with an obvious "halo" might also be good. I think having the original source images (or the one at EV 0.00) is valuable for this article, since it demonstrates what the tone mapping is actually doing. I'll see if I can get information and/or original images relating to some of the other photos. Chrisjohnson 17:30, 2 April 2007 (UTC)

I've incorporated a few of the (most exemplary, not necessarily 'best') images into a section on the visual effect of tone mapping, and have made a number of other changes. Probably most controversially, I've moved the previous title image down to the gallery of other images. It's a nice picture, but not especially high-dynamic range so it doesn't demonstrate tone mapping as well as some of the other images. Chrisjohnson 14:50, 22 May 2007 (UTC)

[edit] Is it really better?

Unless I use masks to use the light exposure for the dark areas and the dark exposure for the light areas, does it really result in better pictures than if I just took a middle-exposure picture? There ought to be a comparison of middle-exposure versus two- and more- stepped tone mapped pictures to show the actual benefit of the whole process. - Keith D. Tyler ¶ 18:27, 23 August 2007 (UTC)